See your eye doctor: For your symptoms of floaters you should see your eye doctor right away to see if it's the sign of a serious problem. As for your other symptoms, they should warrant some further testing.
I believe that it is correct to say that RNA is not replicated, but reproduced. DNA, what I know currently, is the only one that replicates itself.   Plus, to my knowledge, you don't need to copy a RNA strand.
b. The templates: DNA polymerase and RNA polymerase use DNA as a template, whereas telomerase copies an RNA template that is part of the enzyme. Reverse transcriptase uses RNA as a template in the life cycle of retroviruses and retrotransposons, but in vitro it can use either DNA or RNA as a template.0.3 Elongation of transcription by E. coli RNA polymerase proceeds at about 50 nucleotides per sec. Therefore, the rRNA primary transcript would be synthesized in 6500 nucleotides /50 nucleotides per sec = 130 sec, or slightly over 2 min.